Question :

A very simple but confusing puzzle.A lady buys goods worth $ 20 from a shop. (shopkeeper selling the goods with zero profit).The lady gives him 100 $ note. The shopkeeper gets the change from the next shop and keeps 20 for himself and returns $ 80 to d lady.Later the shopkeeper of the next shop comes with the 100 $ saying “duplicate” and takes his money back.How much LOSS did the shopkeeper face ?

Answer :

The Shopkeeper faced a loss of $100.$20 worth of Goods and $80 worth of cash.